NEET Physics: Thermodynamics — MCQ Test 13

Q6. Which of the following is NOT a state variable in thermodynamics?

Q7. An ideal gas absorbs \( 1000 \, \text{J} \) of heat in an isochoric process, increasing its temperature by \( 20 \, \text{K} \). What is the number of moles of the gas? (\( C_v = 20 \, \text{J mol}^{-1} \text{K}^{-1} \))

Q8. A gas undergoes an adiabatic expansion, doing 450 J of work. What is the change in its internal energy?

Q9. A system absorbs \( 830 \, \text{J} \) of heat and has \( 290 \, \text{J} \) of work done on it. What is the change in internal energy?

Q10. A gas expands adiabatically from \( 5 \, \text{L} \) to \( 20 \, \text{L} \), reducing its temperature from \( 500 \, \text{K} \) to \( 250 \, \text{K} \). If \( 1 \, \text{mole} \) of gas is used and \( R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1} \), what is the work done by the gas? (\( \gamma = 1.5 \))

NEET Physics — Thermodynamics

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A system in a cyclic process absorbs \( 650 \, \text{J} \) of heat and performs \( 200 \, \text{J} \) of work. What is the heat rejected?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Thermodynamics. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Performs, Rejected, Undergoes, Adiabatic, Compression, and Internal.

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Preview of Questions in this Test

Q1. A system in a cyclic process absorbs \( 650 \, \text{J} \) of heat and performs \( 200 \, \text{J} \) of work. What is the heat rejected?

  • A. 400 J
  • B. 450 J
  • C. 500 J
  • D. 550 J

Q2. A gas undergoes an adiabatic compression with 400 J of work done on it. What is the change in internal energy?

  • A. 350 J
  • B. 400 J
  • C. 450 J
  • D. 500 J

Q3. Which of the following statements is correct about internal energy?

  • A. It is a state function
  • B. It depends on the path taken
  • C. It is always zero
  • D. It measures heat flow

Q4. A gas undergoes an adiabatic expansion from \( 10 \, \text{L} \) to \( 40 \, \text{L} \), reducing its pressure from \( 8 \, \text{atm} \) to \( 1 \, \text{atm} \). What is the value of \( \gamma \)?

  • A. 1.33
  • B. 1.5
  • C. 1.67
  • D. 2.0

Q5. A gas at 3 atm in a 4 L container is heated from 25°C to 75°C at constant volume. What is the final pressure?

  • A. 3.0 atm
  • B. 3.5 atm
  • C. 4.0 atm
  • D. 4.5 atm

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